Scientists think that there have been at least 5 mass extinctions in the last 540 million years科学家认为在过去的5.4亿年至少发生5次大规模的毁灭性事件
They also believe that we have entered a new extinction event 他们也认为我们已经进入一个新的毁灭事件
Species are becoming extinct at a much faster rate than before 物种灭绝的速度将比以前更快
Instead of asteroids and volcanic eruptions，the current event is the result of human activities 当钱事件不是小行星和火山爆发，而是人类活动的结果
Human activities，for example ，have led to Global warming 人类活动，例如导致全球变暖
Global warming is the result of an increase in carbon gases in our atmosphere全球变暖是我们大气层中碳气体增加的结果
These gases trap heat from sun，so the Earth is getting warmer 这些气体吸收太阳中的热量，所以地球正在变暖
As a result，sea levels are rising and weather patterns are changing 结果，海平面正在上升，天气模式在变化
In addition，we humans are destroying the habitats of many plants and animals 另外我们人类正在摧毁许多植物和动物的栖息地
Cutting off forests and polluting rivers destroys habitats of many forms of life 森林的减少和河水的污染摧毁乐许多生命的形式
There is no longer any doubt that this is happening 不再有任何疑惑，这正在发生
Species of life are disappearing at an increasing rate 生命的物种正在以增长的速率消失
Global temperatures are rising and weather patterns are changing 全球温度正在上升，天气模式正在改变
Scientists are warning us that fast action is necessary to save our future 科学家正在警示我们必须快速行动挽救我们的未来
If we don't act ，we may go the way of the dinosaurs 如果我们不采取行动，我们可能走上恐龙的道路
